I dont want to go into specifics of my unique application but I have one carbine where I dont want a light on it 24/7. I want to be able to take a 2-cell handheld surefire sized light and put it on the gun and take it off in a QD fashion and be able to use the light as a handheld when not needed.
I've seen various devices to clamp a handheld light to a rail, but they are not QD fashion.
I dont need it to be "super QD", just something that is tool-less an doesn't require a hex key.
Also, ideally something that doesn't make the handheld light much bigger. Since it will be used in handheld mode 90% of the time.
There's a really specific niche reason for this, so please dont try to suggest I have a dedicated light for each, haha, sorry, for this particular purpose, it won't work.